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Defence Current Affairs Quiz: 23 October 2026

  • 12 questions
  • 12 minutes
  • Difficulty: Medium
Useful for:Defence
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About this quiz

This Defence current affairs quiz puts 12 multiple-choice questions to you from 4 stories published on 23 October 2026 that matter for the Defence general awareness section. The questions are the same verified MCQs that accompany GK24's articles, chosen here for their relevance to Defence, and every one carries a full explanation of the correct option and of why the other options are wrong. Attempt the quiz within the timer, review the explanations at the end, and read the stories behind the questions on their articles or the day's edition page. Bookmark it for a quick revision before the exam.

Questions in this quiz

12 questions with answers and explanations

Q1.DefenceMedium

What is the theme of the Indo-Pacific Regional Dialogue 2026 to be held by the Indian Navy?

  1. A.Maritime Security and Blue Economy
  2. B.Science, Technology and Academic Cooperation in the Indo-Pacific
  3. C.Collaborative Approaches to Ocean Governance
  4. D.Powering the Global South
Show answer
Correct answer: B. Science, Technology and Academic Cooperation in the Indo-Pacific

The Indian Navy will hold the Indo-Pacific Regional Dialogue in New Delhi from 3 to 5 November 2026 on this theme, with the National Maritime Foundation as the principal organiser, and experts from 18 countries of the region taking part.

Q2.DefenceEasy

Which Indian Navy ship took part in Exercise INDRA 2026 with the Russian Federation Navy?

  1. A.INS Shivalik
  2. B.INS Sahyadri
  3. C.INS Talwar
  4. D.INS Tabar
Show answer
Correct answer: B. INS Sahyadri

The Ministry of Defence said that Indian Naval Ship Sahyadri departed Vladivostok in the Russian Federation on 20 October 2026 after the bilateral naval exercise INDRA 2026 between the Indian Navy and the Russian Federation Navy was completed, so Sahyadri is the Indian warship tied to this edition of the…

Q3.NationalEasy

How many Civil Defence Master Trainers are to be trained by the Indian Army in the first phase of the new joint initiative?

  1. A.300
  2. B.600
  3. C.1,200
  4. D.6,000
Show answer
Correct answer: B. 600

The Ministry of Home Affairs has said that in the first phase a total of 600 Civil Defence Master Trainers, 50 from each participating State or Union Territory, are proposed to be trained by the second week of November 2026 through a three-day specialised programme at designated Indian Army training…

Q4.Science & TechnologyMedium

The study on the effect of black hole spin on quasi-periodic oscillations was led by scientists of which institute?

  1. A.Indian Institute of Astrophysics, Bengaluru
  2. B.Aryabhatta Research Institute of Observational Sciences (ARIES)
  3. C.Physical Research Laboratory, Ahmedabad
  4. D.Inter-University Centre for Astronomy and Astrophysics, Pune
Show answer
Correct answer: B. Aryabhatta Research Institute of Observational Sciences (ARIES)

Its Numerical and Theoretical Astrophysics Group built the computer simulation of viscous accretion flows used in the work, which was led by Mr Sanit Debnath and Dr Indranil Chattopadhyay, with scientists from the Nicolaus Copernicus Astronomical Center in Poland and MJP Rohilkhand University, Bareilly.

Q5.DefenceHard

At which summit did Prime Minister Narendra Modi announce the Indo-Pacific Oceans Initiative?

  1. A.The 14th East Asia Summit in Bangkok
  2. B.The 14th G20 Summit in Osaka
  3. C.The 13th East Asia Summit in Singapore
  4. D.The 15th East Asia Summit in Hanoi
Show answer
Correct answer: A. The 14th East Asia Summit in Bangkok

The initiative sets out seven interconnected maritime lines of thrust, and successive editions of the Indo-Pacific Regional Dialogue have taken up selected dimensions of those lines of thrust.

Q7.NationalMedium

Which body of the Ministry of Home Affairs is running the Civil Defence Master Trainer programme with the Indian Army?

  1. A.National Disaster Response Force
  2. B.National Disaster Management Authority
  3. C.Directorate General of Fire Services, Civil Defence and Home Guards
  4. D.Bureau of Police Research and Development
Show answer
Correct answer: C. Directorate General of Fire Services, Civil Defence and Home Guards

The announcement states that this directorate of the Ministry of Home Affairs, working in coordination with the Indian Army, is undertaking the pilot initiative to strengthen Civil Defence preparedness through specialised training of Master Trainers.

Q8.Science & TechnologyEasy

In the context of black hole research, QPO stands for:

  1. A.Quantum Photon Oscillation
  2. B.Quasi-Periodic Oscillation
  3. C.Quadrupole Phase Orbit
  4. D.Quasar Polar Outflow
Show answer
Correct answer: B. Quasi-Periodic Oscillation

Matter pulled towards a black hole forms an accretion flow that falls inward at high speed and emits non-thermal radiation, and the brightness of that radiation shows nearly regular variations known as quasi-periodic oscillations.

Q9.DefenceMedium

How many countries will send experts to the Indo-Pacific Regional Dialogue 2026, and how many thematic sessions does it have?

  1. A.12 countries and three sessions
  2. B.18 countries and five sessions
  3. C.25 countries and seven sessions
  4. D.18 countries and seven sessions
Show answer
Correct answer: B. 18 countries and five sessions

Maritime practitioners, scientists, academicians, policymakers and experts from 18 countries across the Indo-Pacific will contribute to the dialogue, and the conference has five professional thematic sessions spread over its three days.

Q12.Science & TechnologyHard

According to the ARIES study, what happens to the shock in the accretion disc when a black hole spins rapidly?

  1. A.It is pushed farther from the black hole, giving only low-frequency QPOs
  2. B.It is pulled closer to the black hole, producing QPOs over a wider range of frequencies
  3. C.It disappears completely and no QPOs are produced
  4. D.It becomes permanently stable and stops oscillating
Show answer
Correct answer: B. It is pulled closer to the black hole, producing QPOs over a wider range of frequencies

The simulations showed that as spin increases, the oscillating shock moves inward and its oscillations grow more pronounced, so the predicted frequencies can exceed 100 Hz for a black hole of about ten solar masses, which matches the fast variations observed in black hole X-ray binary systems.

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